EP 0610331 B1 19980603 - CIRCUIT ASSEMBLY AND METHOD FOR ELECTRICAL EDDY-CURRENT TESTING
Title (en)
CIRCUIT ASSEMBLY AND METHOD FOR ELECTRICAL EDDY-CURRENT TESTING
Title (de)
SCHALTUNGSANORDNUNG UND VERFAHREN ZUR ELEKTRISCHEN WIRBELSTROMPRÜFUNG
Title (fr)
CIRCUIT ET PROCEDE D'ESSAI PAR COURANT DE FOUCAULT
Publication
Application
Priority
- DE 4135645 A 19911029
- DE 9200894 W 19921027
Abstract (en)
[origin: WO9309428A1] The invention concerns a circuit assembly including a measurement coil (L) located in one arm (2) of a bridge circuit. To power the bridge, the invention calls for two synchronized signal generators (14, 16) which can be controlled independently of each other and can supply the bridge simultaneously with different voltages. This makes it possible to balance the bridge, and hence carry out eddy-current testing at different frequencies, without the need for mechanically changeable circuit elements in the bridge arms (2, 8).
IPC 1-7
IPC 8 full level
G01N 27/90 (2006.01); G01R 17/10 (2006.01)
CPC (source: EP)
G01N 27/9046 (2013.01); G01N 27/9086 (2013.01); G01R 17/10 (2013.01)
Designated contracting state (EPC)
DE FR
DOCDB simple family (publication)
WO 9309428 A1 19930513; CA 2122362 A1 19930513; DE 59209364 D1 19980709; EP 0610331 A1 19940817; EP 0610331 B1 19980603; JP H07500666 A 19950119
DOCDB simple family (application)
DE 9200894 W 19921027; CA 2122362 A 19921027; DE 59209364 T 19921027; EP 92922439 A 19921027; JP 50808593 A 19921027